Abstract
The deformation and fracture behavior of HY-100, a high-strength steel, under high strain-rate planar-impact conditions, has been studied with the Laser-Driven Miniflyer apparatus. Cold-rolled copper flyers 3 mm in diameter and either 50 or 100 microns thick have been laser-launched against HY-100 targets, 200 microns thick and nominally 10 mm square. The target specimens were sectioned from the 25-mm-thick HY-100 plate in three mutually perpendicular orientations, either parallel or perpendicular to the plate rolling direction. The back-surface response of the HY-100 targets was monitored with dual VISARs. The flyer velocity was varied to produce a range of behavior, from deformation at low velocities, to damage formation at intermediate velocities, and finally to complete spall failure at the highest velocities. The target specimens were sectioned after testing to examine the microstructure and failure processes of the deformed material. Spall strengths were calculated from the VISAR signals. The VISAR traces showed well-defined elastic precursors, which were similar for all orientations of the specimens. The spall strengths, as estimated from the magnitude of the pullback signal, were also similar for all three orientations. The spall strength increased as the flyer impact velocity increased, to values of about 4.6 GPa. Metallographic examination revealed that
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Alexander, David J;
[1]
Robbins, David L
[2]
- Los Alamos National Laboratory, MST-6, G770, Los Alamos, NM 87545 (United States)
- Los Alamos National Laboratory, DX-1, P952, Los Alamos, NM 87545 (United States)
Citation Formats
Alexander, David J, and Robbins, David L.
Laser-driven planar impact of miniature specimens of HY-100 steel.
United States: N. p.,
2002.
Web.
doi:10.1063/1.1483618.
Alexander, David J, & Robbins, David L.
Laser-driven planar impact of miniature specimens of HY-100 steel.
United States.
https://doi.org/10.1063/1.1483618
Alexander, David J, and Robbins, David L.
2002.
"Laser-driven planar impact of miniature specimens of HY-100 steel."
United States.
https://doi.org/10.1063/1.1483618.
@misc{etde_20621018,
title = {Laser-driven planar impact of miniature specimens of HY-100 steel}
author = {Alexander, David J, and Robbins, David L}
abstractNote = {The deformation and fracture behavior of HY-100, a high-strength steel, under high strain-rate planar-impact conditions, has been studied with the Laser-Driven Miniflyer apparatus. Cold-rolled copper flyers 3 mm in diameter and either 50 or 100 microns thick have been laser-launched against HY-100 targets, 200 microns thick and nominally 10 mm square. The target specimens were sectioned from the 25-mm-thick HY-100 plate in three mutually perpendicular orientations, either parallel or perpendicular to the plate rolling direction. The back-surface response of the HY-100 targets was monitored with dual VISARs. The flyer velocity was varied to produce a range of behavior, from deformation at low velocities, to damage formation at intermediate velocities, and finally to complete spall failure at the highest velocities. The target specimens were sectioned after testing to examine the microstructure and failure processes of the deformed material. Spall strengths were calculated from the VISAR signals. The VISAR traces showed well-defined elastic precursors, which were similar for all orientations of the specimens. The spall strengths, as estimated from the magnitude of the pullback signal, were also similar for all three orientations. The spall strength increased as the flyer impact velocity increased, to values of about 4.6 GPa. Metallographic examination revealed that damage occurred at lower impact velocities in specimens loaded in the through-thickness direction of the plate, as compared to specimens oriented parallel to the plate thickness, but this difference was not reflected in the pull-back signal or the spall strengths.}
doi = {10.1063/1.1483618}
journal = []
issue = {1}
volume = {620}
journal type = {AC}
place = {United States}
year = {2002}
month = {Jul}
}
title = {Laser-driven planar impact of miniature specimens of HY-100 steel}
author = {Alexander, David J, and Robbins, David L}
abstractNote = {The deformation and fracture behavior of HY-100, a high-strength steel, under high strain-rate planar-impact conditions, has been studied with the Laser-Driven Miniflyer apparatus. Cold-rolled copper flyers 3 mm in diameter and either 50 or 100 microns thick have been laser-launched against HY-100 targets, 200 microns thick and nominally 10 mm square. The target specimens were sectioned from the 25-mm-thick HY-100 plate in three mutually perpendicular orientations, either parallel or perpendicular to the plate rolling direction. The back-surface response of the HY-100 targets was monitored with dual VISARs. The flyer velocity was varied to produce a range of behavior, from deformation at low velocities, to damage formation at intermediate velocities, and finally to complete spall failure at the highest velocities. The target specimens were sectioned after testing to examine the microstructure and failure processes of the deformed material. Spall strengths were calculated from the VISAR signals. The VISAR traces showed well-defined elastic precursors, which were similar for all orientations of the specimens. The spall strengths, as estimated from the magnitude of the pullback signal, were also similar for all three orientations. The spall strength increased as the flyer impact velocity increased, to values of about 4.6 GPa. Metallographic examination revealed that damage occurred at lower impact velocities in specimens loaded in the through-thickness direction of the plate, as compared to specimens oriented parallel to the plate thickness, but this difference was not reflected in the pull-back signal or the spall strengths.}
doi = {10.1063/1.1483618}
journal = []
issue = {1}
volume = {620}
journal type = {AC}
place = {United States}
year = {2002}
month = {Jul}
}